KR100990307B1 - Method for cutting liquid crystal display panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cutting a liquid crystal display panel, wherein liquid crystal display panels having a first size and liquid crystal display panels having a second size are fabricated in a first region and a second region of a large mother substrate, and a first region is manufactured. And a cutting line for cutting the second region from the first size liquid crystal display panels to the cutting portion for cutting the first region and the second region and from the first size liquid crystal display panels to the end of the first region. The distances between the second sized liquid crystal display panels or the cutouts for cutting the first region and the second region from the second sized liquid crystal display panels and the distances from the second sized liquid crystal display panels to the end portions of the second region. By forming the same as, it is possible to simplify the alignment process of the mother substrate and the cutting equipment.

Description

Cutting method of liquid crystal display panel {METHOD FOR CUTTING LIQUID CRYSTAL DISPLAY PANEL}

1 is an exemplary view showing a schematic planar structure of a unit liquid crystal display panel in which a thin film transistor array substrate and a color filter substrate of a liquid crystal display are bonded to each other.

FIG. 2 is an exemplary cross-sectional view of a first mother substrate on which thin film transistor array substrates are formed and a second mother substrate on which color filter substrates are formed to form a plurality of liquid crystal display panels.

3 illustrates an example in which a plurality of liquid crystal display panels are formed on a large mother substrate.

FIG. 4 illustrates an example in which liquid crystal display panels of a larger size are manufactured on the mother substrate of FIG. 3. FIG.

5 is an exemplary view illustrating a mother substrate on which liquid crystal display panels having different sizes are manufactured.

6A through 6C are liquid crystals that separate the first and second regions of the first and second mother substrates shown in FIG. 5 and separately separate the second sized liquid crystal display panels formed in the second region. An illustration showing the cutting process of the display panel sequentially.

7A to 7C are liquid crystals of a second size formed in the second region by separating the first region and the second region of the first mother substrate and the second mother substrate shown in FIG. 5 according to one embodiment of the present invention. An exemplary view sequentially showing a cutting process of a liquid crystal display panel for separating display panels individually.

*** Explanation of symbols for main parts of drawing ***

301: liquid crystal display panel of the first size 302: liquid crystal display panel of the second size

303: alignment pin 304: alignment key

310: first mother substrate 311: first region

312: Second area 320: Second mother substrate

321: first cut line 322A to 322J: second cut line

323A ~ 323J: 3rd cutting line

D11: Distance from first size liquid crystal display panels to first cutting line

D12: Distance from liquid crystal display panels of the first size to the end of the first region

D13: Distance from the liquid crystal display panels of the second size to the first cut line

D14: Distance from liquid crystal display panels of the second size to the end of the second region

The present invention relates to a method for cutting a liquid crystal display panel, and more particularly, to a method for cutting a liquid crystal display panel for cutting liquid crystal display panels manufactured to have different sizes on a large area mother substrate into individual unit liquid crystal display panels. will be.                         

In general, a liquid crystal display device displays a desired image by individually supplying data signals according to image information to liquid crystal cells arranged in a matrix form, and adjusting a light transmittance of the liquid crystal cells. to be.

The liquid crystal display includes a plurality of thin film transistor array substrates formed on a large mother substrate, a plurality of color filter substrates formed on a separate mother substrate, and the two mother substrates bonded to each other, thereby forming the thin film transistor array substrates and the color filter. A plurality of unit liquid crystal display panels in which substrates are bonded are formed and then cut into unit liquid crystal display panels to improve yield.

In general, the unit liquid crystal display panel is cut by a wheel having a hardness higher than that of glass, and forming a cut scheduled groove on the surface of the parent substrate, and causing cracks to propagate along the cut scheduled groove. The cutting process of the unit liquid crystal display panel will be described in detail with reference to the accompanying drawings.

First, FIG. 1 is an exemplary view showing a schematic planar structure of a unit liquid crystal display panel in which a thin film transistor array substrate and a color filter substrate of a liquid crystal display are bonded to each other.

Referring to FIG. 1, the liquid crystal display panel 10 includes an image display unit 13 in which liquid crystal cells are arranged in a matrix, a gate pad unit 14 and data wires connected to gate lines of the image display unit 13. And a data pad section 15 to be connected with each other. At this time, one long side and one short side of the thin film transistor array substrate 1 protrude relative to the color filter substrate 2, and the gate pad part 14 is formed on one protruding short side of the thin film transistor array substrate 1. The data pad part 15 is formed on one protruding side of the thin film transistor array substrate 1.

The gate pad unit 14 supplies a scan signal supplied from the gate driver to the gate lines of the image display unit 13, and the data pad unit 15 supplies image information supplied from the data driver to the gate lines of the image display unit 13. Supply to the data lines.

In the image display unit 13 of the thin film transistor array substrate 1, data lines to which image information is applied and gate lines to which a scan signal is applied are arranged to cross each other, and the data lines and the gate lines are divided to cross each other. The unit pixel is formed in the rectangular region. In this case, the unit pixel includes a thin film transistor applied as a switching element and a pixel electrode connected to the thin film transistor.

The image display part 13 of the color filter substrate 2 is provided with a color filter separated and applied to each cell region by a black matrix, and a common electrode which is a counter electrode of a pixel electrode formed on the thin film transistor array substrate 1. .

The thin film transistor array substrate 1 and the color filter substrate 2 constructed as described above are bonded to face each other by sealants (not shown) formed on the outer side of the image display portion 13, and the bonded thin film transistors A spacer is provided between the array substrate 1 and the color filter substrate 2 to form a cell-gap so as to be spaced apart from each other, and the thin film transistor array substrate 1 and the color filter substrate 2 are formed. In the cell-gap of the liquid crystal layer (not shown) is formed.

2 is a cross-sectional view illustrating a cross-sectional structure of a plurality of liquid crystal display panels by combining a first mother substrate on which the thin film transistor array substrates 1 are formed and a second mother substrate on which the color filter substrates 2 are formed.

Referring to FIG. 2, the unit liquid crystal display panels are formed such that one side of the thin film transistor array substrates 1 protrudes from the color filter substrates 2. This is because the gate pad part 14 and the data pad part 15 are formed in the protruding regions of the thin film transistor array substrates 1 as described with reference to FIG. 1.

Therefore, the color filter substrates 2 formed on the second mother substrate 30 are dummy regions 31 corresponding to the area where the thin film transistor array substrates 1 formed on the first mother substrate 20 protrude. It is spaced apart by).

In addition, each of the unit liquid crystal display panels may be appropriately disposed to maximize use of the first and second mother substrates 20 and 30. In general, the unit liquid crystal display panels may be formed to be spaced apart from each other by the dummy region 32. In addition, dummy regions 21 for process margins are formed at edges of the second mother substrates 20 and 30.

After the first mother substrate 20 on which the thin film transistor array substrates 1 are formed and the second mother substrate 30 on which the color filter substrates 2 are formed are bonded, the liquid crystal display panels are individually cut. The dummy area 31 formed in the area where the color filter substrates 2 of the mother substrate 30 are spaced apart from the dummy area 32 and the first and second mother substrates 20 and 30 spaced apart from the unit liquid crystal display panels. The dummy area 21 formed at the edge is removed at the same time.

3 illustrates an example in which a plurality of liquid crystal display panels are formed on a large mother substrate. As shown in FIG. 3, in consideration of the size of the mother substrate 100 and the liquid crystal display panel 110, FIG. Liquid crystal display panels 110 are regularly spaced apart from each other.

However, when manufacturing the larger size of the liquid crystal display panel 120 on the mother substrate 100 as shown in the exemplary diagram of FIG. 4, only four liquid crystal display panels 120 may be formed. The mother substrate 100 in the region where the display panel 120 is not formed is discarded.

Therefore, there is a problem that the utilization efficiency of the mother substrate 100 is lowered, which leads to a decrease in productivity and a cost increase of the product.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems as described above, and an object of the present invention is to fabricate liquid crystal display panels having different sizes on a large mother substrate, and to separate these liquid crystal display panels into individual unit liquid crystal display panels. The present invention provides a method of cutting a liquid crystal display panel that can simplify the alignment process of the mother substrate and the cutting equipment.

In order to achieve the object of the present invention, a method of cutting a liquid crystal display panel may include a first region and a second size liquid crystal display panel in which first size liquid crystal display panels are fabricated from a first mother substrate and a second mother substrate. Cutting the fabricated second region; Individually cutting liquid crystal display panels of a first size formed in the first region; And separately cutting the liquid crystal display panels of the second size formed in the second region, and the distance from the liquid crystal display panels of the first size to the cut portion for cutting the first region and the second region. Is equal to the distance from the liquid crystal display panels of the first size to the end of the first region, or the distance from the liquid crystal display panels of the second size to the cutout for cutting the first region and the second region. And a distance from the liquid crystal display panels of the second size to an end portion of the second region.

The method of cutting the liquid crystal display panel according to the present invention as described above will be described in detail with reference to the accompanying drawings.

FIG. 5 is an exemplary view illustrating a mother substrate on which liquid crystal display panels having different sizes are manufactured, and as shown in FIG. 5, four liquid crystals having a first size on the first and second mother substrates 210 and 220 joined to each other. The first region 211 is formed to be uniformly spaced apart from the display panels 201, and the second region 212 is formed to be uniformly spaced apart from the four liquid crystal display panels 202 having the second size. . Accordingly, the mother substrate of FIG. 5 may further fabricate four liquid crystal display panels 202 having a second size in a region to be disposed of the mother substrate, compared to the conventional FIG. 4, thereby maximizing the utilization efficiency of the mother substrate. do.

Alignment keys 204 are formed at corners of the liquid crystal display panels 201 having the first size and the liquid crystal display panels 202 having the second size, and alignment pins 203 are formed and bonded to the cutting equipment. The first mother substrate 210 and the second mother substrate 220 are aligned with the cutting equipment.

Although not shown in detail on the drawings, the liquid crystal display panels 201 and 202 are bonded to one side and one side of the thin film transistor array substrate so as to protrude relative to the color filter substrate, as shown in FIG. 1. The gate pad part is formed at one short side of the protruding thin film transistor array substrate, and the data pad part is formed at one long side of the protruding thin film transistor array substrate.

The method of cutting the liquid crystal display panel which individually cuts the liquid crystal display panels fabricated on the mother substrate of FIG. 5 will be described in detail as follows.

First, the bonded first mother substrate 210 and the second mother substrate 220 are aligned with the cutting equipment, and then the first region 211 and the second size where the liquid crystal display panels 201 having the first size are manufactured. A first cutting line is formed between the second regions 212 on which the liquid crystal display panels 202 are formed to cut the first region 211 and the second region 212.

Alignment pins 203 are formed on the cutting equipment, and alignment keys 204 are formed on the corners of the first size liquid crystal display panels 201 and the second size liquid crystal display panels 202 and are bonded to each other. The first mother substrate 210 and the second mother substrate 220 are aligned with the cutting equipment.

The process of aligning the bonded first mother substrate 210 and the second mother substrate 220 with the cutting equipment includes a primary alignment using the alignment pins 203 and a secondary alignment using the alignment keys 204. Are distinguished.

The first alignment may be performed by manipulating the first mother substrate 210 and the second mother substrate 220 to which the operator is joined by hand, one side and one side of the first mother substrate 210 and the second mother substrate 220. This is to make contact with the alignment pins 203 of the cutting equipment.

In the secondary alignment, the coordinates of the alignment key 204 are detected by a camera so that the bonded first mother substrate 210 and the second mother substrate 220 are positioned at the reference coordinates.

In addition, the first region 211 of the separated first mother substrate 210 and the second mother substrate 220 is aligned with a cutting device and formed along the short sides of the first size liquid crystal display panels 201. 2 Form a cut line.

The first region 211 of the first mother substrate 210 and the second mother substrate 220 is rotated by 90 °, aligned with the cutting equipment, and the long sides of the first size liquid crystal display panels 201 are aligned. As a result, a third cutting line is formed.

The first region 211 of the first mother substrate 210 and the second mother substrate 220 is inverted and aligned with the cutting equipment.

Then, the surface of the second mother substrate 220 hits the cracks to propagate along the second and third cutting lines formed on the surface of the first mother substrate 210 and then the reversed second mother substrate A fourth cutting schedule line is formed along the long sides of the first size liquid crystal display panels 201 formed in the 220 and the first region 211 of the first mother substrate 210.

Then, the first region 211 of the second mother substrate 220 and the first mother substrate 210 is rotated by 90 degrees, aligned with the cutting equipment, and short sides of the first size liquid crystal display panels 201 are formed. As a result, a fifth cutting line is formed.

The second mother substrate 220 and the first region 211 of the first mother substrate 210 are inverted (overturned), aligned with the cutting equipment, and then hitting the surface of the first mother substrate 210. The cracks propagate along the fourth and fifth cutting lines formed on the surface of the second mother substrate 220.

As described above, in the first region 211 of the first mother substrate 210 and the second mother substrate 220, the first size of the crack propagated along the second, third, fourth, and fifth cutting lines. The liquid crystal display panels 201 are separately extracted.

The liquid crystal display panels 202 of the second size formed in the second region 212 of the first mother substrate 210 and the second mother substrate 220 are also formed in the first region 211. The liquid crystal display panels 201 of one size are individually extracted through the same process as the process of separating them individually.

As described above, the cutting method of the liquid crystal display panel includes the first region 211 and the second region of the first mother substrate 210 and the second mother substrate 220 from the liquid crystal display panels 201 of the first size. The distance from the first cutting schedule line separating the 212 and the distance from the liquid crystal display panels 201 of the first size to the end of the first region 211 are different from each other, and the liquid crystal display of the second size is different. Distance and second size from the panels 202 to the first cutting line that separates the first region 211 and the second region 212 of the first mother substrate 210 and the second mother substrate 220. The distances from the liquid crystal display panels 202 to the ends of the second region 212 are different from each other.

Therefore, each time the inverted first mother substrate 210 and the second mother substrate 220 are inverted, the first and second liquid crystal display panels 201 and the second size of the liquid crystal display panels 202 are formed at the corners. The position of the alignment keys 204 is changed so that the camera cannot detect the coordinates of the alignment keys 204 in a predetermined reference coordinate. This will be described in detail as follows.

6A to 6C illustrate a process of cutting a liquid crystal display panel that separates first and second regions of a first mother substrate and a second mother substrate and separately separates liquid crystal display panels of a second size formed in the second region. Is an exemplary view showing sequentially.

First, as shown in FIG. 6A, a first region 211 in which the liquid crystal display panels 201 of the first size are formed and a second region 212 in which the liquid crystal display panels 202 of the second size are formed are disposed in the cutting equipment. After the alignment, the first cutting line 221 is formed between the first region 211 and the second region 212 to separate the first region 211 and the second region 212. In this case, the distance D1 from the liquid crystal display panels 201 of the first size to the first cutting schedule line 221 and from the liquid crystal display panels 201 of the first size to the ends of the first region 211. Distance D2 is different from each other, and the distance D3 from the second size liquid crystal display panels 202 to the first cutting line 221 and the liquid crystal display panels 202 of the second size. The distances D4 to the ends of the second region 212 are different from each other.

As shown in FIG. 6B, the separated second region 212 is aligned with the cutting equipment, and the second cutting schedule lines 222A to 222J are formed along the long and short sides of the liquid crystal display panels 202 of the second size. ).

Alignment pins 203 are provided in the cutting device, and alignment keys 204 are formed at the corners of the liquid crystal display panels 202 having the second size to align the second area 212 with the cutting device.

The process of aligning the second area 212 with the cutting equipment is divided into a primary alignment using the alignment pins 203 and a secondary alignment using the alignment keys 204.

The primary alignment is to allow the operator to manipulate the second region 212 by hand so that one side and one side of the second region 212 are in contact with the alignment pins 203.

In the secondary alignment, the coordinates of the alignment key 204 are detected by the camera so that the second area 212 is positioned at the reference coordinate. At this time, the camera moves to a predetermined reference coordinate to detect the coordinates of the alignment keys 204, and compares the second area 212 to the cutting equipment so that the coordinates of the alignment keys 204 coincide with the reference coordinates. Align it.

As shown in FIG. 6C, the second region 212 is inverted to be aligned with the cutting equipment, and then the surface of the second region 212 is hit to crack along the second cut lines 222A to 222J. The third cutting lines 223A to 223J are formed along the long and short sides of the liquid crystal display panels 202 of the second size.

Alignment pins 203 are provided in the cutting device, and alignment keys 204 are formed at the corners of the liquid crystal display panels 202 having the second size to align the second area 212 with the cutting device.

The process of aligning the second area 212 with the cutting equipment is divided into a primary alignment using the alignment pins 203 and a secondary alignment using the alignment keys 204.

The primary alignment is to allow the operator to manipulate the second region 212 by hand so that one side and one side of the second region 212 are in contact with the alignment pins 203.

In the secondary alignment, the coordinates of the alignment key 204 are detected by the camera so that the second area 212 is positioned at the reference coordinate. At this time, the camera moves to a predetermined reference coordinate to detect the coordinates of the alignment keys 204, and compares the second area 212 to the cutting equipment such that the coordinates of the alignment keys 204 correspond to the reference coordinates by comparing with the reference coordinates. Align it.

However, as described above, the distance D3 from the liquid crystal display panels 202 of the second size to the first cutting schedule line 221 and the second region 212 from the liquid crystal display panels 202 of the second size. Since the distances D4 to the ends of the second side are different from each other, when the second region 212 is inverted, the positions of the alignment keys 204 formed at the corners of the liquid crystal display panels 202 of the second size are changed.

Therefore, when the camera moves to a predetermined reference coordinate, the coordinates of the alignment keys 204 formed at the corners of the liquid crystal display panels 202 of the second size cannot be detected. Therefore, the reference coordinate of the camera must be corrected. As a result, the time required for alignment becomes longer, which causes a decrease in productivity.

Thereafter, the second region 212 is inverted to be aligned with the cutting equipment, and then the surface of the second region 212 is hit so that cracks propagate along the third cutting lines 223A to 223J. The liquid crystal display panel 202 of the second size propagated by the cracks is separately extracted from the second cutting line 222A to 222J and the third cutting line 223A to 223J.

However, when the second region 212 is inverted again, the alignment keys 204 formed at the corners of the liquid crystal display panels 202 of the second size are changed back to the positions as shown in FIG. 6A.

Therefore, when the camera moves to the modified reference coordinates, the coordinates of the alignment keys 204 formed at the corners of the liquid crystal display panels 202 of the second size cannot be detected. Therefore, the reference coordinates of the camera must be corrected again. As a result, the time required for alignment becomes longer, which causes a decrease in productivity.

In consideration of the above problems, the distance from the liquid crystal display panels of the first size to the cutout for cutting the first region and the second region is equal to the distance from the liquid crystal display panels of the first size to the ends of the first region. The first or the distance from the liquid crystal display panels of the second size to the cutout for cutting the first region and the second region is equal to the distance from the liquid crystal display panels of the second size to the end of the second region. A cutting line may be formed, which will be described in detail with reference to the accompanying drawings.

7A to 7C illustrate a liquid crystal display according to the present invention which separates first and second regions of a first mother substrate and a second mother substrate, and separately separates a liquid crystal display panel of a second size formed in the second region. It is an exemplary figure which showed the cutting process of a panel sequentially.

First, as shown in FIG. 7A, a first region 311 having the first sized liquid crystal display panel 301 and a second region 312 having the second sized liquid crystal display panel 302 are formed in the cutting equipment. After loading and aligning, a first cutting line 321 is formed between the first region 311 and the second region 312 to separate the first region 311 and the second region 312. In this case, the distance D11 from the first size liquid crystal display panels 301 to the first cutting schedule line 321 and the first size liquid crystal display panels 301 to the end of the first region 311. Forming the first cutting line 321 to be equal to each other, or the distance D13 from the liquid crystal display panels 302 of the second size to the first cutting line 321. A first cutting line 321 is formed such that the distances D14 from the second sized liquid crystal display panels 302 to the ends of the second region 312 are equal to each other.

As described above, in order to form the first cutting line 321, the first size may be spaced apart from the space between the liquid crystal display panels 301 of the first size and the liquid crystal display panels 302 of the second size or from the outside of the mother substrate. In consideration of the distance between the liquid crystal display panels 301 and the liquid crystal display panels 302 of the second size, the liquid crystal display panels 301 of the first size and the liquid crystal display panels 302 of the second size It can be formed on the area mother substrate.

Alternatively, after the first cutting line 321 is formed, the distance D11 from the first size liquid crystal display panels 301 to the first cutting line 321 and the first size liquid crystal display panel ( A step of cutting an end of the first area 311 so that the distances D12 from the 301 to the end of the first area 311 are equal to each other may be added. The distance D13 from 302 to the first cutting line 321 and the distance D14 from the liquid crystal display panels 302 of the second size to the end of the second area 312 are equal to each other. A process of cutting the end of the second region 312 may be added.

As shown in FIG. 7B, the separated second region 312 is loaded and aligned on the cutting equipment, and a second cutting schedule line 322A is formed along the long and short sides of the liquid crystal display panels 302 of the second size. To 322J).

The cutting device includes alignment pins 303, and alignment keys 304 are formed at corners of the liquid crystal display panels 302 having the second size to align the second area 312 with the cutting device.

The process of aligning the second region 312 with the cutting equipment is classified into a primary alignment using the alignment pins 303 and a secondary alignment using the alignment keys 304.

The primary alignment is to allow the operator to manipulate the second region 312 by hand so that one short side and one long side of the second region 312 contact the alignment pins 303.                     

The secondary alignment is to detect the coordinates of the alignment key 304 with the camera so that the second area 312 is located in the reference coordinates. At this time, the camera moves to a predetermined reference coordinate to detect the coordinates of the alignment keys 304, and compares the second area 312 to the cutting equipment so that the coordinates of the alignment keys 304 correspond to the reference coordinates by comparing with the reference coordinates. Align it.

As shown in FIG. 7C, the second region 312 is inverted to be aligned with the cutting equipment, and then the surface of the second region 312 is hit to crack along the second cutting lines 322A to 322J. The third cutting lines 323A to 323J are formed along the long and short sides of the liquid crystal display panels 302 of the second size.

The cutting device includes alignment pins 303, and alignment keys 304 are formed at corners of the liquid crystal display panels 302 having the second size to align the second area 312 with the cutting device.

The process of aligning the second region 312 with the cutting equipment is classified into a primary alignment using the alignment pins 303 and a secondary alignment using the alignment keys 304.

The primary alignment is to allow the operator to manipulate the second region 312 by hand so that one short side and one long side of the second region 312 contact the alignment pins 303.

The secondary alignment is to detect the coordinates of the alignment key 304 with the camera so that the second area 312 is located in the reference coordinates. At this time, the camera moves to a predetermined reference coordinate to detect the coordinates of the alignment keys 304, and compares the second area 312 to the cutting equipment so that the coordinates of the alignment keys 304 correspond to the reference coordinates by comparing with the reference coordinates. Sort by

As described above, the first cutting line 321 has a distance D13 from the liquid crystal display panels 302 of the second size to the first cutting line 321 of the second size and the liquid crystal display panel of the second size. Since the distances D14 from the 302 to the end of the second region 312 are formed to be equal to each other, even when the second region 312 is inverted, the liquid crystal display panels 302 of the second size 312 are inverted. The position of the alignment keys 304 formed at the corners is not changed.

Therefore, when the camera moves to a predetermined reference coordinate, the coordinates of the alignment keys 304 formed at the corners of the liquid crystal display panels 302 of the second size can be detected. It is possible to align the two areas 312 to the cutting equipment it is possible to shorten the time required for alignment, and to improve the productivity.

Thereafter, the second region 312 is inverted to be aligned with the cutting equipment, and then the surface of the second region 312 is hit so that cracks propagate along the third cutting lines 323A to 323J, and the second region. The second sized liquid crystal display panel 302 of which the crack propagates along the second cutting lines 322A to 322J and the third cutting lines 323A to 323J is separately extracted from the 312.

As described above, even when the second region 312 is inverted again, the positions of the alignment keys 304 formed at the corners of the liquid crystal display panels 302 of the second size do not change.

Therefore, when the camera moves to a predetermined reference coordinate, the coordinates of the alignment keys 304 formed at the corners of the liquid crystal display panels 302 of the second size can be detected. It is possible to align the two areas 312 to the cutting equipment it is possible to shorten the time required for alignment, and to improve the productivity.

7A to 7C, the liquid crystal display panel 302 of the second size is separately separated from the second region 312. However, the liquid crystal display panel according to the present invention has been described. The cutting method may also be applied to separately separating the first size liquid crystal display panels 301 from the first region 311.

7A to 7C, the liquid crystal display panels 301 having the first size and the liquid crystal display panel 302 having the second size are formed in the first region 311 and the second region 312. However, the method of cutting the liquid crystal display panel according to the present invention is limited to the case in which four panels are manufactured. The liquid crystal display panel 301 having the first size manufactured in the first region 311 and the second region 312 is described. ) And a case in which the number of liquid crystal display panels 302 having the second size or the size of the liquid crystal display panel 302 is varied or the size is varied.

As described above, the cutting method of the liquid crystal display panel according to the present invention manufactures liquid crystal display panels having a first size and liquid crystal display panels having a second size in the first region and the second region of the large mother substrate. The cut-off line for cutting the first region and the second region is the distance from the liquid crystal display panels of the first size to the cutout portion for cutting the first region and the second region, and the distance of the first region from the liquid crystal display panels of the first size. The distance to the end is formed to be the same, or the distance from the second size liquid crystal display panels to the cutout for cutting the first area and the second area, and from the second size liquid crystal display panels to the end of the second area. By forming the same distance, the alignment process of the mother substrate and the cutting equipment can be simplified, thereby reducing the time required for the alignment of the mother substrate and the cutting equipment and improving productivity. There is.

Claims (10)

A process of cutting a first region in which liquid crystal display panels of a first size and a second region in which liquid crystal display panels of a second size are manufactured from the bonded first mother substrate and the second mother substrate along a first cutting line. and; Aligning the cutting device with the first area on which the cut first sized liquid crystal display panels are manufactured; Forming a second cutting line along the long sides and short sides of the first size liquid crystal display panels on the surface of the first region; Inverting the first region to align with the cutting equipment; Striking the surface of the first region to propagate the crack along the second cut line; Forming a third cutting line along the long sides and short sides of the first size liquid crystal display panels on the surface of the first region; Inverting the first region to align with the cutting equipment; Hitting a surface of the first region to propagate a crack along the third cutting target line; Separately extracting liquid crystal display panels having a first size of the first region; And separately cutting the liquid crystal display panels of the second size formed in the second region, The distance D11 from the first cutting line to cut the first area and the second area to an end of the liquid crystal display panels of the first size adjacent to the first cutting line is from the end of the first area. The first cut-off line is equal to the distance D12 to the liquid crystal display panels of the first size adjacent to the end of the first area or from the first cut-off line cutting the first area and the second area. The distance D13 to the end of the second sized liquid crystal display panels adjacent to the line is equal to the distance D14 from the end of the second region to the second sized liquid crystal display panels adjacent to the end of the second region. The cutting method of the liquid crystal display panel characterized by the above-mentioned. delete The method of claim 1, wherein the step of aligning the first region and the cutting equipment Primary alignment using alignment pins provided in the cutting equipment; And a second order alignment using alignment keys formed at corners of the liquid crystal display panels having the first size of the first region. The method of claim 3, wherein the primary alignment is such that one side of the first region and one side of the first region are in contact with the alignment pins by the operator by operating the first region by hand. The method of claim 3, wherein the secondary alignment detects the coordinates of the alignment keys with a camera so that the first region is positioned at the reference coordinate. The method of claim 5, wherein the camera moves to a predetermined reference coordinate to detect coordinates of the alignment keys, and compares the alignment of the first area with the cutting equipment such that the coordinates of the alignment keys match the reference coordinates. The cutting method of the liquid crystal display panel characterized by the above-mentioned. The process of claim 1, wherein the process of individually cutting the liquid crystal display panels of the second size formed in the second region is performed. Aligning the second region with the cutting equipment; Forming a fourth cutting line along a long side and a short side of a liquid crystal display panel of a second size on a surface of the second region; Inverting the second area to align with the cutting equipment; Hitting a surface of the second region to propagate a crack along the fourth cutting target line; Forming a fifth cutting line along a long side and a short side of a liquid crystal display panel of a second size on a surface of the second region; Inverting the second area to align with the cutting equipment; Striking the surface of the second region to propagate the crack along the fifth cutting line; And separately extracting the liquid crystal display panels having the second size of the second region. 8. The method of claim 7, wherein the step of aligning the second region with the cutting equipment Primary alignment using alignment pins provided in the cutting equipment; And a second alignment using alignment keys formed at corners of the liquid crystal display panels having the second size of the second region. The distance D11 from the first cutting line to cut the first region and the second region to the first sized liquid crystal display panels adjacent to the first cutting line is the first region. And cutting the end of the first region to be equal to the distance D12 from the end of the first region to the liquid crystal display panels of the first size adjacent to the end of the first region. Cutting method. The display panel of claim 1, wherein a distance D13 from the first cutting line to cut the first region and the second region to the second sized liquid crystal display panels adjacent to the first cutting line is the second region. And cutting the end of the second region to be equal to the distance D14 between the end of the second region and the liquid crystal display panels of the second size adjacent to the end of the second region. Cutting method.

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